How do we measure sustainable development? Two new indexes, two very different views
It’s been a busy day for launching new country rankings. Today (July 20), the Sustainable Development Solutions Network (SDSN) released a 427-page report ranking countries by 77 indicators tied to the 17 UN Sustainable Development Goals approved last year. The SDG index averages countries’ performance on those goals. Each goal is assessed by a mélange of indicators, including poverty and obesity rate, traffic deaths, literacy rate, seats held by women in national parliament, access to water and electricity, unemployment, mobile broadband subscriptions, wastewater treatment, and carbon emissions.
How does compliance with the UN Sustainable Development Goals SDGs square with achieving development that can be sustained within the means of our planet? Ultimately, to be sustainable, development need to fit within our planet's resource budget. Therefore sustainable development can be mapped as development achievement, on the on hand, and resource demand, on the other.
The graph below summarizes the results. It shows the position of the top and bottom 10 countries on the SDG index in terms of their Human Development Index scores and their Ecological Footprints.
Soaring ocean temperature is 'greatest hidden challenge of our generation'
A ‘truly staggering’ rate of warming is changing the behaviour of marine species, reducing fishing zones and spreading disease. The ocean has absorbed more than 90% of the extra heat created by human activity. If the same amount of heat that has been buried in the upper 2km of the ocean had gone into the atmosphere, the surface of the Earth would have warmed by a devastating 36C, rather than 1C, over the past century.
The oceans are heating up. That's a big problem on a blue planet
The extra heat that our greenhouse gases trap is actually absorbed by the oceans. That means that the upper few meters of the sea have been steadily warming more than a tenth of a degree celsius per decade, a figure that’s accelerating. When you think of the volume of water that represents, and then try to imagine the energy necessary to raise its temperature, you get an idea of the blowtorch that our civilization has become.
The Horrors of the Ancient Hothouse — Hydrogen Sulfide in the World’s Warming Oceans
